Imported Upstream version 2.2.1upstream/2.2.1

1 files changed, 180 insertions, 0 deletions

diff --git a/plugin.h b/plugin.h
new file mode 100644
index 0000000..969d451
--- /dev/null
+++ b/plugin.h
@@ -0,0 +1,180 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * plug-in support, using dynamically loaded libraries
+ */
+
+#ifndef OPENVPN_PLUGIN_H
+#define OPENVPN_PLUGIN_H
+
+#include "openvpn-plugin.h"
+
+#ifdef ENABLE_PLUGIN
+
+#include "misc.h"
+
+#define MAX_PLUGINS 16
+
+struct plugin_option {
+  const char *so_pathname;
+  const char **argv;
+};
+
+struct plugin_option_list {
+  int n;
+  struct plugin_option plugins[MAX_PLUGINS];
+};
+
+struct plugin {
+  bool initialized;
+  const char *so_pathname;
+  unsigned int plugin_type_mask;
+  int requested_initialization_point;
+
+#if defined(USE_LIBDL)
+  void *handle;
+#elif defined(USE_LOAD_LIBRARY)
+  HMODULE module;
+#endif
+
+  openvpn_plugin_open_v1 open1;
+  openvpn_plugin_open_v2 open2;
+  openvpn_plugin_func_v1 func1;
+  openvpn_plugin_func_v2 func2;
+  openvpn_plugin_close_v1 close;
+  openvpn_plugin_abort_v1 abort;
+  openvpn_plugin_client_constructor_v1 client_constructor;
+  openvpn_plugin_client_destructor_v1 client_destructor;
+  openvpn_plugin_min_version_required_v1 min_version_required;
+  openvpn_plugin_select_initialization_point_v1 initialization_point;
+
+  openvpn_plugin_handle_t plugin_handle;
+};
+
+struct plugin_per_client
+{
+  void *per_client_context[MAX_PLUGINS];
+};
+
+struct plugin_common
+{
+  int n;
+  struct plugin plugins[MAX_PLUGINS];
+};
+
+struct plugin_list
+{
+  struct plugin_per_client per_client;
+  struct plugin_common *common;
+  bool common_owned;
+};
+
+struct plugin_return
+{
+  int n;
+  struct openvpn_plugin_string_list *list[MAX_PLUGINS];
+};
+
+struct plugin_option_list *plugin_option_list_new (struct gc_arena *gc);
+bool plugin_option_list_add (struct plugin_option_list *list, char **p, struct gc_arena *gc);
+
+#ifdef ENABLE_DEBUG
+void plugin_option_list_print (const struct plugin_option_list *list, int msglevel);
+#endif
+
+struct plugin_list *plugin_list_init (const struct plugin_option_list *list);
+
+void plugin_list_open (struct plugin_list *pl,
+		       const struct plugin_option_list *list,
+		       struct plugin_return *pr,
+		       const struct env_set *es,
+		       const int init_point);
+
+struct plugin_list *plugin_list_inherit (const struct plugin_list *src);
+
+int plugin_call (const struct plugin_list *pl,
+		 const int type,
+		 const struct argv *av,
+		 struct plugin_return *pr,
+		 struct env_set *es);
+
+void plugin_list_close (struct plugin_list *pl);
+bool plugin_defined (const struct plugin_list *pl, const int type);
+
+void plugin_return_get_column (const struct plugin_return *src,
+			       struct plugin_return *dest,
+			       const char *colname);
+
+void plugin_return_free (struct plugin_return *pr);
+
+#ifdef ENABLE_DEBUG
+void plugin_return_print (const int msglevel, const char *prefix, const struct plugin_return *pr);
+#endif
+
+static inline int
+plugin_n (const struct plugin_list *pl)
+{
+  if (pl && pl->common)
+    return pl->common->n;
+  else
+    return 0;
+}
+
+static inline bool
+plugin_return_defined (const struct plugin_return *pr)
+{
+  return pr->n >= 0;
+}
+
+static inline void
+plugin_return_init (struct plugin_return *pr)
+{
+  pr->n = 0;
+}
+
+#else
+
+struct plugin_list { int dummy; };
+struct plugin_return { int dummy; };
+
+static inline bool
+plugin_defined (const struct plugin_list *pl, const int type)
+{
+  return false;
+}
+
+static inline int
+plugin_call (const struct plugin_list *pl,
+	     const int type,
+	     const struct argv *av,
+	     struct plugin_return *pr,
+	     struct env_set *es)
+{
+  return 0;
+}
+
+#endif /* ENABLE_PLUGIN */
+
+#endif /* OPENVPN_PLUGIN_H */